Expansible-joint construction



W. C. PARMLEY AND C. GILMAN.

EXPANSIBLE JOINT CONSTRUCTION.

APPLICATION FILED FEB- 13. 1919.

J1,4L35,1?5. atented Nov. M, 1922,

patented Nov.f1l4,' 1922.

eann wanna c. manner, or UPPER moivrcmm, AND CHARLES GILMAN, orrnainrrnrn,

" 1 new JERSEY.

Essex and 'n'xrnnsIBLn-Jom'r cons'rauc'rxoiv. I

Application filed February 18, 1919. Serial No. 276,855.

To all whom it concern:

Be it known that we, WALTER C. PARM- LEY and CHARLES GILMAN, citizens ofthe United States, and residents, respectively, of U per Montclair, inthe county of tate of New Jersey, and Plainfield, in the countyof Unionand State of New Jerse have invented a certain new and usefullmprovement in Expansible-Joint Construct-ions (C), of which. thefollowing is a full, clear and exact description.

This invention relates to a form of joint to be used between abuttingunits or masses of concrete or similar material for the purpose ofproviding a substantially watertight joint, and additionally, a joint inj which there is sufiicient flexibility to permit of slight relativemovement between the units or masses of concrete. I

=The present invention seeks. to overcome certain disadvantages whichare present in the use of ordinary joints, one of which is that whenconcrete pipes, for instance, have been placed in position, dirt andsand. arefrequently. washed into the joints. Additionally, often much ofthe mortar or grout used-in the joint between the pipes is washed out orWasted through the opening between the adjacent ends of the pipe.

Generally speaking, the invention may be said to comprise the elementsand the combinations thereof set forth in the accom- Reference. shouldloo-had to the accompanying' drawings forming a part of thisspecification, in which Fig.1 is a sectional elevationshowing abuttingpipes embodying my invention; Fig, 2 is a sectional'elevation ofabutting pipes showing a modified form of the invention; Fig. 3isasectional elevationof abuttingpipes showing,-

a modified form of my invention; Fig.4 is a sectional elevation ofabutting pipes show-. ing a modified form of my invention; Fig.- 5

is a sectional elevation of abutting pipes showingyamodified form ofmy-- invention;

Fig. 6 is a sectional elevation of abutting pipes showing a modifiedforum of my invention; and Fig.7 isa sectional elevation showing themanner in which the invention may be applied to usual constructions suchas floors, walls, etc.

The underlyingoonstructionwhich we embody in various structures tocarryout our invention is the combined use of a strip an adjacentconcrete mass or unit.

of impervious material and a thick coating or mass of some suitableplastic, gum-like substance, such, for example, asabitumlnous Isubstance, one edge of the sheet of metal cooperating with the gum-likesubstance to eflec-t awjoint and seal.

Referring to Fig. 7 of the drawings, the

bedding therein athin strip of metal such as indicated at 3, while theother of the units is prepared with a recess 4 which contains a mass 5of some suitable gum-like substance.

The units 1 and 2 are placed in proper position with respect to eachother, and the metal strip 3 is caused to be-embedded in the mass 5.This engagement between the mass 5 and the strip of metal makes aneffective seal so that moisture can not pass around the end of the metalstrip 3, and consequently the joint is waterproof and seepage proof.

After the units 1 'and 2 are brought into proper position as shown, thejoint between the units may be filled with concrete mortar or grout. Itwill be apparent that in addition to the waterproof character of thejoint which has just been described, the

metal strip will have sufiicient flexibility to permit of slightrelativemovement between the units 1 and 2, and furthermore, the mass 5 beingsomewhat plastic in nature willj efi'ect such movement without breakingthe joint. Referring to Fig. l, we have there shown the application'ofour invention to the joint between adjacent sections of concrete pipe.The sections are indicated at 6 and 7, one being formed with a bell end,and the other with a spigot end, which is the usual construction.

One advantage of our invention is that itmaybe applied to pipes havingusual construction at the end thereof, thus being illustrated in Fig. 1,wherein a metal'strip 45 Y brought into contact.

at 9. This, as it were, cements the strip 8 in proper place, andprevents the seepage of water around the strip 8 at the portion which isin engagement with thepipe sec I tion 7.

p Within the bell end of the pipe section 6 amass 10 of gum-likematerial is placed, this being preferably placed after'the pipe is dry,so that it adheres, to the wall, of the pipe. '-When the pipe sections 6and 7 are assembled the free edge of the strip 8 embeds itself in thegum-like material 10, thus forming an effective seal so that water, cannot seep past the strip 8 at either edge thereof. x

The space between the adjacent pipe sections 6 and 7 may be filled withconcrete, mortar or grout on either side or upon both sides of the strip8.

In Fig. 2 a modified form of the invention is illustrated, in which ametal strip of annular form such as indicated at 11 is molded into thespigot end of the pipe 7 with an edge thereof projecting beyond thepipe. A mass 12 of -like material is placed against the wall of the bellend of the pipe 6, and in position so that when the pipe sections 6 and7 are brou ht together the end of the strip 11 is embe ded in the mass12. As stated with respect to the showing in Fig. 1, the space betweenthe adjacent pipe sections maybe filled with concrete, mortar or grout.-In Fig. 3 the pipe 7 is made with the strip 13 molded therein in thesame fashion as explained with respect to Fig. 2.

The pipe section 6 is provided with a recess'in the wall thereof, asindicated at 14. In this recess is placed a mass of gum-like material asindicated at 15, and'intofthis mass 15 the edge of thefstrip 13 extends,and is embedded when the plpe sections are The space between the ends ofthe pipe sections may be filled with concrete. mortar or grout. I

In-Fig. 4 we have shown a combination of the constructions which areillustrated in Figs. 1 and 2. The construction shown in the figurementioned employs 'an annular strip of metal 16 which cooperates withthe spigot end of the .pipe 7 and there is an additional annular stripof metal 17 which is embedded at the spigot end of the pipe 7. The strip16 cooperates with a coating or mass of gum-like material as indicatedat 18'. while the metal strip 17 cooperates with a coating or mass ofgum-like material indicated at 19. The space between the adjacent endsof the concrete pipe maybe filled with concrete, mortar or grout.

The construction which has just been described possesses the advantageof forming a double seal, thus making .doubly "sure against the seepageof water through the joint between the pipe sections.

have shown in the preceding. figures the operation of our inventionwherein the metal strip is mounted upon or aflixed to the spigot end ofa pipe section, that the same results may be attained where the metalstrip is carried by the bell end'of a ipe section. This is illustratedin Fig. 5. ere

It will at once be apparent that while we the bell end of the pipesection 6 has an annular metal strip 19 embedded therein, the ed e ofthe strip extending from the bell end 0% the pipe. The space between themetal strip and the inner surface of the bell is filled in with asuitablegum-like material as indicated at 20, and the spigot end of thepipe section 7 carries a mass of gum-Ike material as indicated at 21,with which the free edgeof the metalfstrip 19 cooperates, thus formingan effective seal. The space hetween the pipe sections 6 and 7 uponeither v or both sides of the strip 19 may be filled with concrete,mortar or grout.

In Fig. 6 the pipe sectlon 7 at the spigot end thereof has a metal strip22 and between the strip and that portion of the pipe with which itcooperates is a coating of gum-like material such as indicated 'at 23,this being substantially the same construction as the similar one shownand described in respect to Fig. 1.

The pipe section 6 is provided with a recess or groove 24, and in thegroove is placed a gum-likemass '25 into whichthe free edge of the metalstrip 22 extends, and is embedded. Thespace between the pipe sections 6and 7 may be filled upon either or both sides of the strip 22 with c,ncrete, mortar or cement. I v .It will be seen fromthe'foregoingdescription that all of the various forms of the invention shown formeffective seals across the joint to prevent seepage, and to permit alimited amount of movement between theadjacent pipe sections. In' allinstances of the joint, for'in such instances when the tar or similarmaterial is placed after the pipe sections or other concrete sectionsare in place, and in the presence of water, the tar or similar gummymaterial does not effect a good adhesion with the concrete mass to whichit isapplied;

Having described our invention we claim: 1. The combination of two pipesof the bell and spigot design, an annular strip of metal mounted uponthe spigot end of one of the pipes, a coating of adhesive materialbetween the strip and the spigot end of said pipe, a mass of plasticmaterial associated of the bell and spigot design, the spigot end of oneof said pipes having a substantiallyannular surface, an annular strip ofmetal associated on the said annular surface, a coating of adhesivematerial between the said strip and the annular surface with which thestri cooperates and a mass of plastic 'materia associated with the bellend of the other of the pipes, the edge of the strip cutting into andbeing imbedded in the mass of plastic material when the pipes are inposition and mortar or grout in the spaces between the adjacent ends ofthe two pipes.

3. The combination of two pipe sections of the bell and spigot design,an annular strip of metal associated with the spigot end of one of thepipes, a, coating of adhesive material between said strip and the outersurface of the spigot end of the pipe, a recess formed in the bell endof the other of the pipes, a mass of plastic material in said recess,the edge'of said strip cutting into and I being imbedded in the mass ofplastic material when the pipes are in position and mortar or grout inthe spaces between the adjacent ends of the two pipes.

In testimony whereof, we hereunto afiix our signatures in the presenceof two wit nesses.

WALTER C. PARMLEY. CHARLES GILMAN.

Witness es:

Common'l. Pmmr, J. T. BLANcHrmLn.

